Answer:
B
Explanation:
Isotopes are atoms of same element, having same atomic number but different atomic mass due to varied number of neutrons.
Only option B atom has same number of protons and different neutrons.
For #2: Odor, Temperature, and color
10 x 5 = 50
50 is the mass of her chemical.
Answer:it all above
it all above because all the answer are truth so it all above
